Trait MigrationExecutionProvider 

pub trait MigrationExecutionProvider: Send + Sync {
    // Required methods
    fn available_capabilities(&self) -> &CapabilitySet;
    fn observe_managed_state<'a>(
        &'a self,
        lease: &'a MigrationLease,
        source_candidate: &'a ManagedSchemaState,
        target_candidate: &'a ManagedSchemaState,
    ) -> ExecutionFuture<'a, ManagedSchemaState>;
    fn prepare_group<'a>(
        &'a self,
        lease: &'a MigrationLease,
        source: &'a ManagedSchemaState,
        target: &'a ManagedSchemaState,
    ) -> ExecutionFuture<'a, Box<dyn PreparedMigrationGroup + 'a>>;
}

Provider seam for exact managed-state observation and group transactions.

Required Methods

fn available_capabilities(&self) -> &CapabilitySet

Return the exact capabilities negotiated by this execution provider.

fn observe_managed_state<'a>( &'a self, lease: &'a MigrationLease, source_candidate: &'a ManagedSchemaState, target_candidate: &'a ManagedSchemaState, ) -> ExecutionFuture<'a, ManagedSchemaState>

Independently observe managed state under the current active fence.

The source and target candidates supply the already-verified scope, profiles, and possible managed selections used for observation. Their fingerprint claims are not observation input.

fn prepare_group<'a>( &'a self, lease: &'a MigrationLease, source: &'a ManagedSchemaState, target: &'a ManagedSchemaState, ) -> ExecutionFuture<'a, Box<dyn PreparedMigrationGroup + 'a>>

Begin a transaction that rechecks exact source state and the active fence.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors